EP3194233A2

EP3194233A2 - Side glazing of a transport means having an openable window

Info

Publication number: EP3194233A2
Application number: EP15787654.1A
Authority: EP
Inventors: Michael Kleitsch; Uwe Grigo
Original assignee: Saint Gobain Glass France SAS; Compagnie de Saint Gobain SA
Current assignee: Saint Gobain Glass France SAS
Priority date: 2014-09-19
Filing date: 2015-09-17
Publication date: 2017-07-26
Anticipated expiration: 2035-09-17
Also published as: WO2016042270A3; CA2956827C; RU2017113269A; CA2956827A1; US20170282938A1; WO2016042270A2; JP2017534503A; US10328956B2; RU2707849C2; PL3194233T3; JP6680769B2; CN106488865B; EP3194233B1; KR102439177B1; ES2783279T3; FR3026076B1; FR3026076A1; KR20170057348A; RU2017113269A3; CN106488865A

Abstract

The invention relates to a side glazing (1) of a transport means, in particular glazing for a train, said glazing being a fixed multiple glazing, having an openable window (2), said glazing comprising at least one intermediate substrate face (12, 22) that comprises, in a part of the glazing located under said window, a main glass sheet (15), and a main sheet of plastic material (16) that is located in contact between the intermediate face (12, 22) and the main glass sheet (15), without the main glass sheet and the main sheet of plastic material being in contact with said glazing frame structure (3).

Description

LATERAL GLAZING OF TRANSPORT MEANS WITH WORKING WINDOW

The invention relates to the production of a side glazing of a transport means, and in particular a train glazing unit, said glazing being a fixed multiple glazing, with an openable window.

Such glazing usually includes:

an outer substrate having an outer face that faces an outer space, an intermediate face opposite the outer face, and a peripheral edge,

an inner substrate having an inner face which faces an inner space, an intermediate face opposite the inner face, and a peripheral edge,

and a glazing frame structure which holds the outer substrate and the inner substrate together so that the glazing separates said outer space from said interior space with a glazing cavity located between the outer substrate and the inner substrate,

said outer substrate and said inner substrate each having, in an upper part, a hole opening on each face of the substrate and separated from the peripheral edge of the substrate, the holes of the substrates being opposite one another , in order to make the window open,

- The glazing frame structure now further the two substrates around the holes. The prior art is known from the Chinese utility model No. CN 202788522, such a lateral window of multiple transport means, fixed, with a working window.

This glazing has a satisfactory aesthetics thanks to the substrates each provided with a rectangular hole to make the window open.

This glazing has a satisfactory thermal insulation capacity due to the presence of the glazing cavity between the two substrates.

However, this glazing does not constitute so-called "safety" glazing because the glass substrates, even if one or both of them has or has undergone a chemical or thermal treatment intended to reinforce or strengthen it, does not allow not to make a security glazing in the sense that if an object hits one of the substrates and the breeze, it means that this object is very likely enough energy to break the other substrate and thus completely break the glazing.

Only a lamination, comprising at least one plastic sheet and then a sheet of glass that are provided in this order on a surface of a substrate, allows for a safety glazing. Such safety glazing is more resistant to shocks, while allowing if necessary evacuation after breaking glass substrates and cutting the plastic sheet.

The prior art also knows from European Patent Application No. EP 2 363 284, a lateral glazing structure of means of transport, this glazing being multiple, fixed, security, but without a working window. This document presents a solution to facilitate the breakage of the glazing, and thus facilitate evacuation.

In this document, it is proposed that a reinforcement lamination of a glazing substrate is not in contact with a peripheral structure of glazing frame by providing that this lamination is set back from this peripheral structure. This shrinkage is the same all around the periphery of the substrate: the distance between the edge of the lamination and the edge of the substrate that carries it is the same all along the periphery.

When this indented lamination is applied to the teaching of CN 202788522, logically this lamination must go all the way around the window structure. The removal logically follows the peripheral periphery of the carrier substrate of the lamination and is then present not only under the openable window, but also on the sides of this window and above.

The object of the invention is to make it possible to produce a fixed, multiple glazing window with openable window, which has a facility of destruction in a lower part located under the openable window to allow emergency escape, while allowing the structure to be preserved. of glazing which holds the window so that this structure and this window do not interfere with the escape route. The invention thus rests on the fact of providing a reinforcement lamination in the glazing part located under the window, without this lamination being in contact with the glazing structure which holds the window.

The object of the invention is, in its broadest sense, a side glazing of a transport means, in particular a train glazing unit, according to claim 1. Said glazing is a fixed, multiple glazing window with a working window, comprising :

- The glazing frame structure now further the two substrates around the holes.

The glazing according to the invention is remarkable in that at least one intermediate substrate face which faces the glazing cavity comprises in a part of the glazing situated under said window on the one hand a main glass sheet and on the other hand a main plastic sheet which is in contact between the intermediate face and the main glass sheet, without the main glass sheet and the main plastic sheet being in contact with said glazing frame structure.

Thus, when the glazing is oriented vertically, the lamination comprising the main glass sheet and the main plastic sheet is disposed below the openable window; this leafing stops at the top at a distance, below a lower peripheral edge the hole in the substrate which makes it possible to produce the window and on the sides and at the bottom at a distance from the peripheral edge of the substrate which carries it, so that when this lamination is broken in order to allow emergency escape, its destruction does not have to influence on the integrity of the glazing all around and especially has no influence above, on the integrity of the window.

Since this main lamination is located under the openable window, it does not extend on the left and right sides of the openable window, nor above the openable window (when the glazing is considered vertical).

The main lamination stops in its upper part below a horizontal line that would be formed by the lower edge of the hole of the carrier substrate of the main lamination, this line being fictitiously extended on the carrier substrate of the main lamination, left and right of the hole.

It is therefore possible to break the glazing below the window to allow an emergency escape under the window, preserving the integrity of the window and the integrity of the remainder of glazing, so that this window and the rest of the glazing do not interfere with the evacuation.

Said main glass sheet and said main plastic sheet are preferably set back by at least 2 mm, and preferably between 2 and 5 mm, with respect to said glazing frame structure. This shrinkage is preferably constant all around the main lamination. A shrinkage value in this range of 2 to 5 mm allows the lamination to maximize the substrate that carries it, while being sufficient to maintain the integrity of the glazing structure and further allows this withdrawal is not very visible from the inside, keeping a clear glass through the foliage which is as big as possible.

To improve the ability to maintain the integrity of the glazing structure while allowing the passage under the window in case of breakage, preferably at least one intermediate face of the substrate which faces the glazing cavity, and preferably the two intermediate substrate faces which face the glazing cavity, comprise (nt) in a part of the glazing situated above said window, on the one hand a secondary glass sheet and on the other hand a sheet of material secondary plastic that is located in contact between the intermediate face and the secondary glass sheet, with the secondary glass sheet and the secondary plastic sheet in contact with said glazing frame structure.

Thus, the glazing is reinforced in its part above the window. However, this secondary lamination comprising the secondary glass sheet and the secondary plastic sheet, if it is located on the same substrate as the main lamination, is distinct from the main lamination: the secondary lamination is separated from the main lamination by a strip non-laminated substrate; this band has for example a height of the order of 5 to 50 millimeters.

Preferably, said secondary plastic sheet and said secondary glass sheet are also located on each lateral side of said window. Thus, the glazing is also reinforced in its two lateral parts, on each side of the window.

In an easier to manufacture variant, said primary plastic sheet and said secondary plastic sheet are both located against the intermediate face of the same substrate, and preferably the outer substrate. Preferably, these two sheets of plastics are not in contact with each other so as not to create a direct mechanical or chemical bond between them.

Preferably, each substrate is made of glass which has undergone a chemical or thermal treatment intended to reinforce it.

In a particular embodiment of the invention, said window comprises, an outer glass element, an inner glass element and a window frame structure holding said outer glass element with said inner glass element by producing a window cavity located between outer glass element and the inner glass element, one side of the outer glass element which faces the window cavity comprising on the one hand a window glass sheet and on the other hand a window plastic sheet which is located in contact between the outer glass element and the window glass sheet, with the window glass sheet and the window plastic sheet in contact with said window frame structure. This contact with the window frame structure makes it possible to increase the mechanical strength of the window. The "window frame" refers to the periphery of the window that is movable with the window when opening or closing the window.

Said glazing frame structure preferably comprises a horizontal cross member located under said window, said crossbar not being in contact with two lateral uprights of the glazing frame structure.

Said glazing cavity is preferably located all around said window (this glazing cavity is in one piece).

The glazing according to the invention preferably comprises no outwardly protruding element, beyond the outer face of the outer substrate.

Each sheet of plastic material used for the glazing according to the invention has an ability to enhance the mechanical strength by adhering the glass sheet disposed on the substrate or the glass element disposed below; in this glazing, at least one of these sheets of plastic material, or all these sheets of plastic material, may or may furthermore have a sound insulation capacity.

Advantageously, the present invention thus makes it possible to produce a fixed multiple glazing of transport means which has high thermal insulation characteristics, high mechanical strength characteristics, while having a working window and which can serve as an emergency exit. .

The present invention allows in particular that the space of the glazing which is located under the opening window can be used as an emergency exit preserving the integrity of the rest of the glazing, that is to say by allowing the window structure to stay in place so as not to hinder the evacuation, below, by the emergency exit thus created.

Advantageously, the present invention thus makes it possible to produce a fixed window-opening multiple glazing which has a smooth exterior view, with no mechanical element more outward than the outer face of the outer substrate. The details and advantageous features of the invention emerge from the following nonlimiting example, illustrated with the aid of the attached figures illustrating:

in Figure 1, a glazing according to the invention seen from the interior space; - In Figure 2, the outer substrate of the glazing of Figure 1 seen from the glazing cavity and outwardly;

in Figure 3, the inner substrate of the glazing of Figure 1 seen from the glazing cavity and inwardly; and

in Figure 4, the glazing of Figure 1 seen in section along AA of this figure.

In Figures 1 to 4 the proportions between the dimensions of the different elements are respected in order to facilitate their reading; the same references designate the same elements in all the figures.

Figures 1 and 4 illustrate a side glazing 1 of a means of transport, according to the invention, as it can be seen by a passenger located inside this means of transport.

This is particularly a side window of the train and Figure 1 thus illustrates what a passenger of the train sees while looking on a left or right side with respect to a general direction of advanced train.

This glazing thus provides a vertical separation between an interior space I which is inside the train and an outer space E which is outside the train.

This glazing is fixed and has a window 2 openable.

This glazing 1 comprises:

an outer substrate which has two main faces: an outer face which faces the outer space E and an intermediate face which is opposite the outer face; this substrate also has a peripheral edge 13,

an inner substrate 20 which comprises two main faces: an inner face 21 which faces the inner space I and an intermediate face 22 which is opposite to the inner face; this substrate also has a peripheral edge 23, and a glazing frame structure 3 which securely holds together the outer substrate 10 and the inner substrate 20; however, a closed space is located between the two substrates: it is a glazing cavity 4.

The outer substrate 10 and the inner substrate 20 are each in one piece and each comprise, in an upper portion (relative to the vertical), a hole 14, 24, each hole opening on each face of each substrate and is separate the peripheral edge of the substrate, the holes of the substrates being opposite each other, in order to make it possible to make the window 2 openable, that is to say in order to make it possible to carry out the fixed periphery of the working window.

The glazing frame structure 3 further maintains the two substrates around the holes 14, 24.

The glazing frame structure 3 thus makes it possible to keep the two substrates 10, 20 at a distance from each other, including around the openable window, with a constant distance between the two substrates 10, 20.

The glazing 1 is a multiple glazing in the sense that it comprises several substrates 10, 20 and the glazing cavity 4 which is located between the two substrates, this cavity being filled with air or gas, preferably neutral like the argon; this cavity participates in the thermal insulation conferred by the glazing 1.

This glazing 1 is a fixed glazing in the sense that the glazing frame structure 3 is intended to be fixed to the structure of the transport means (here the train), without the possibility of moving relative to this structure; in the glazing 1, only the window 2 is movable relative to the glazing frame structure 3.

The window 2 is a window internal to the glazing 1; it is openable in the sense that it can be opened and closed relative to the glazing frame structure 3, which is fixed. Of course, means are provided to guide these opening and closing movements, as well as to limit them. For security reasons, the window 2 is openable to the interior space and not to the outside space. In the context of the invention, at least one intermediate face 12, 22 of one of the substrates 10, 20 which faces the glazing cavity 4 comprises in a part of the glazing which is situated under said window:

- on the one hand a main glass sheet 15

and on the other hand a sheet of main plastic material 16,

with this main plastic sheet 16 which is located between the intermediate face 12, 22 and the main glass sheet 15,

this main plastic sheet 16 which is in contact with both the intermediate face 12, 22 and with the main glass sheet 15, without the main glass sheet 15 and the main plastic sheet 16 being at the same. contact of said glazing frame structure 3.

Thus, the glazing 1 comprises at least one of its substrates which is laminated, but this lamination is particular because the plastic sheet and then the glass sheet which are added in this order on the intermediate face of the substrate have a periphery constricted relative to at the periphery of the substrate so as not to be in contact with either one or the other with the glazing frame structure 3.

This characteristic is seen more particularly in FIG. 2 where it is illustrated that the lamination made by the main glass sheet 15 which is glued to the intermediate surface 12 by the main plastic material 16 stops at a distance s from the lower edge the hole 14 and also stops at a distance, which is preferably the same, the peripheral edge 13; this distance s is at least 5 mm, and preferably at least 7 mm; it can be for example 6 mm, or 8 mm.

This characteristic is important to give the glazing its security glazing quality while preserving the structure of the openable window; if the plastic sheet and the glass sheet which are added on the intermediate face of the substrate went to the peripheral edge 13 of the substrate and to the lower edge of the hole 14 or to the sides of the opening window, then these sheets would be in contact with the glazing frame structure 3 and the force required to break the glazing under the window in an emergency could damage the window frame structure. However, if this structure is damaged, it may hinder evacuation; it is a principal object of the invention to avoid this.

In the exemplary embodiment detailed here, it is the intermediate face 12 of the outer substrate 10 which comprises in a part of the glazing which is located under said window the main plastic sheet 16, then on this main plastic sheet the main glass sheet 15, but it could be the intermediate face 22 of the inner substrate 20 which has in a part of the glazing which is located under said window the main plastic sheet, then on this main plastic sheet the main glass sheet.

A main lamination is thus produced, which comprises said main plastic sheet 16 and said main glass sheet 15.

In absolute terms, it is possible for the intermediate face 12, 22 of each of the two substrates 10, 20 which faces the glazing cavity 4 to comprise, each in a part of the glazing unit which is situated under the said window:

- on the one hand a sheet of main glass

- and on the other hand a sheet of main plastic,

with this sheet of main plastic material which is situated between the intermediate face and the glass sheet,

this sheet of main plastic material which is in contact with both the intermediate face and the glass sheet,

- Without the glass sheets and plastic sheets are in contact with said glazing frame structure.

As can be seen more particularly in FIG. 4, the glazing frame structure 3 comprises two spacers:

a peripheral spacer 30 (or "spacer") which is located all around the periphery of the two substrates 10, 20, that is to say that it follows the peripheral edge 13, 23 of these two substrates and

an internal spacer 31 (or "spacer") which is located all around the periphery of the two holes 14, 24.

Each of these two spacers is preferably in one piece. They are not in contact with each other. Each of these two spacers is here positioned against the intermediate faces 12, 22 of the substrates, without being in contact with the peripheral edges 13, 23 of the substrates.

The spacers may be for example plastic and / or metal and / or metal alloy; they make it possible to maintain the two substrates 10, 20 at a constant distance from one another and to create the glazing cavity 4.

With regard to the height of the spacers (when viewed vertically), the distance evoked above results in the fact that the main glass sheet 15 and the main plastic sheet 16 are set back t and at least 2 mm, and preferably at least 5 mm, with respect to said glazing frame structure 3, that is to say with respect to the inner spacer 31 at the top of this lamination and with respect to the peripheral spacer 30 on the lateral sides and at the bottom of this lamination.

The glazing frame structure 3 furthermore comprises horizontal high 32 and low 32 'uprights, as well as left 33 and right side uprights 33' (seen from the inside, as in FIG. 1). These amounts are preferably metal or metal alloy.

This Figure 1 also shows a masking layer 9, located on the inner face 21 of the inner substrate (and not shown in Figure 4). This masking layer conceals the periphery of this inner face 21, as well as the periphery of the openable window 2; This masking layer also hides all that is, in the direction of the outside, behind the periphery of the inner face 21 and the periphery of the window 2 openable.

The glazing frame structure 3 further comprises a peripheral adhesive bead 34 which makes it possible to bond the peripheral edges 13, 23 of the substrates and the peripheral spacer 30 with the uprights 32, 32 ', 33, 33'. This bead of glue may for example be based on polyurethane or silicone or MS polymer or polysulfide.

Amounts 32; 32 ', 33 and 33' are optional because the glazing may be stuck in the rack without using studs or using only side jambs or horizontal studs. As can be seen in FIGS. 2 and 4, the intermediate face 12 of the outer substrate comprises in a part of the glazing situated above said window 2 (and more precisely in this figure above the hole 14 which accommodates the window 2), firstly a secondary glass sheet 17 and secondly a secondary plastic sheet 18 which is interposed, in contact, between the intermediate face 12 and the secondary glass sheet 17.

The secondary plastic sheet 18 and the secondary glass sheet 17 are also located on each lateral side of said window (and more precisely in this figure on each lateral side of the hole 14 which accommodates the window 2).

Thus, the secondary lamination by the secondary plastic sheet 18 and the secondary glass sheet 17 surrounds the hole 14 above and on its left and right sides, having an inverted U-shape; this lamination does not extend below the hole 14 because it is another lamination which is present below this hole: the main lamination with the main plastic sheet 16 and the main glass sheet 15.

For good mechanical strength of the secondary lamination above the window and on its sides, the secondary glass sheet 17 and the secondary plastic sheet 18 are preferably in contact with said glazing frame structure 3 and more. particularly here, near the peripheral edge 13 in contact with the peripheral strut 30 and near the hole 14 in contact with the inner strut 31. This reinforces the preservation of the integrity of the glazing during the rupture of the glazing under the working window (implementation of the emergency exit).

The secondary glass sheet 17 preferably has the same thickness as the main glass sheet 15 and the secondary plastic sheet 18 preferably has the same thickness as the main plastic sheet 16; however, these sheets of glass and its plastic sheets do not overlap; the secondary lamination is separated from the main lamination by the distance s, which produces a separation strip having a height of less than 2 mm and preferably between 5 and 10 mm. With reference to FIG. 2, it can be seen that the direct teaching of European Patent Application No. EP 2 363 284 cited above would lead to a single lamination on the carrier substrate, which would integrate into a single lamination, both the primary plastic sheet and the secondary plastic sheet in a single plastic sheet and both the main glass sheet and the secondary glass sheet in a single glass sheet. There would therefore be no visible distance in FIG. 2. As can be seen in FIGS. 3 and 4, the intermediate face 22 of the inner substrate comprises in a part of the glazing situated above said window 2 (and more precisely on this is shown above the hole 24 which accommodates the window 2), on the one hand a secondary glass sheet 17 'and on the other hand a secondary plastic sheet 18' which is interposed, in contact, between the intermediate face 22 and the secondary glass sheet 17 '.

The secondary plastic sheet 18 'and the secondary glass sheet 17' are also located on each lateral side of said window (and more precisely in this figure on each lateral side of the hole 24 which accommodates the window 2).

For a good mechanical strength of this lamination, the secondary glass sheet 17 'and the secondary plastic sheet 18' are preferably in contact with said glazing frame structure 3 and more particularly here, near the peripheral edge 23 in contact with the peripheral spacer 30 and in the vicinity of the hole 24 in contact with the inner spacer 31. This reinforces the conservation of the integrity of the glazing during the breakage of the glazing under the working window (implementation of the 'emergency exit). It has been verified that an adequate mechanical strength is obtained on the basis of the example of FIGS. 1 to 4, when:

the two substrates 10, 20 are each made of glass which has undergone a treatment intended to reinforce it, such as a heat treatment and in particular a quenching heat treatment and are each of a thickness of 3 to 6 mm, for example 4 mm

the main glass sheet 15 and the two secondary glass sheets 17, 17 'are all made of glass which has not undergone any treatment intended to reinforce it and are each of a thickness of 2 mm

the main plastic sheet 16 and the two secondary plastic sheets 18, 18 'are all three of PVB and are each of a thickness of 0.76 mm.

Optionally, the main glass sheet 15 and the two secondary glass sheets 17, 17 'may be made of glass which has undergone a treatment intended to reinforce them, such as a heat treatment and in particular a quenching heat treatment.

It has been verified that adequate thermal insulation is obtained on the basis of the example of FIGS. 1 to 4, when said glazing cavity 4 is located all around said window 2, in one piece, that it is filled with argon and has on the one hand a uniform thickness and identical to the previous in its part under the window 2 and secondly a uniform thickness in its part on each side and above the window 2.

The distance between the outer face 11 and the inner face 21 is thus constant and is here 25.76 mm.

As can be seen in FIG. 4, the window 2 comprises an outer glass element 40, an inner glass element 50 and a window frame structure 35 which holds the outer glass element 40 with the inner glass element 50 by producing a window cavity. 6 which is thus located between the outer glass element 40 and the inner glass element 50:

- The outer glass element 40 has two main faces: an outer face 41 which faces the outer space E and an intermediate face 42 which is opposite the outer face; the outer glass element 40 also has a peripheral edge 43,

- The inner glass element 50 has two main faces: an inner face 51 which faces the inner space I and an intermediate face 52 which is opposite the inner face; the inner glass element 50 also has a peripheral edge 53. As seen more particularly in FIG. 4, the window frame structure 35 comprises a peripheral window spacer 36 (or "spacer") which is situated all around the periphery of the two glass elements 40, 50.

This peripheral window spacer 36 is preferably in one piece and is here positioned against the intermediate faces 42, 52 of the glass elements, without being in contact with the peripheral edges 43, 53 of these glass elements.

This spacers may be for example plastic and / or metal and / or metal alloy and keeps the two glass elements 40, 50 at a constant distance from one another and create the window cavity 6 .

The window frame structure 35 further includes high and low horizontal uprights, as well as left and right side uprights. These amounts are preferably metal or metal alloy.

The window frame structure 35 further includes a peripheral glue bead 34 'for bonding the peripheral edges 43, 53 of the glass elements and the peripheral window spacer 36 to the posts. This glue bead 34 'is preferably in the same material as the peripheral glue bead 34.

The face 42 of the outer glass element which faces the window cavity 6 comprises:

on the one hand a sheet of window glass 45,

- and secondly a window plastic sheet 46,

with this window plastic sheet 46 which is situated between the intermediate face 42 and the window glass sheet 45,

this plastic window sheet 46 which is in contact with both the intermediate face 42 and the window glass sheet 45, with the window glass sheet 45 and the window plastic sheet 46 with contact of the window frame structure 35 (and more precisely here the peripheral glue bead 34 ').

The two glass elements 40, 50 are each made of glass which has undergone a treatment intended to reinforce it, such as a heat treatment and particularly a quenching heat treatment and are each of identical thickness respectively to the substrates 10, 20.

The window glass sheet 45 has the same thickness as the main glass sheet 15 and the window plastic sheet 46 has the same thickness as the main plastic sheet 16.

The distance d between the outer face 41 and the inner face 51 is thus constant and is here 25.76 mm; it is identical to the distance between the outer face 1 1 and the inner face 21. The window 2 is movable relative to the glazing frame structure 3 according to a rotational movement illustrated by the double arrow R in FIG. 4, towards the inside; this movement is limited to an opening angle of approximately 45 °.

To allow this opening, the glazing frame structure 3 comprises a horizontal crossmember 38 located under said window 2 which allows the horizontal low frame 37 of window frame to pivot on itself along a horizontal axis and relative to the cross member 38 horizontal.

Two handles 29 are provided on the upper upright of the window frame structure 35 to facilitate the gripping of the window 2 by the passengers who wishes to open or close it.

The cross member 38 is also preferably made of metal or metal alloy and is bonded to the inner face 21 of the inner substrate 20 through the bead of adhesive that surrounds the holes 14, 24.

This cross member 38 is not in contact with two lateral uprights 33, 33 'of the glazing frame structure 3.

However, to hide the absence of lamination to the left and right of the cross member 38 over a few millimeters, side covers 39, 39 'are glued on the inner face 21, as shown in Figure 1. A decorative pattern applied for example by screen printing on the intermediate faces 12 and 22 can also ensure this aesthetic function.

As can be seen in FIG. 4, the glazing unit 1 according to the invention has no outwardly projecting element, beyond the outer face 11 of the outer substrate 10. The present invention is described in the foregoing by way of example. It is understood that the skilled person is able to achieve different variants of the invention without departing from the scope of the patent as defined by the claims.

Claims

1. Glazing (1) side of a means of transport, in particular train glazing, said glazing being a multiple glazing, fixed, window (2) openable, said glazing comprising:

an outer substrate (10) having an outer face (1 1) which faces an outer space (E), an intermediate face (12) opposite the outer face, and a peripheral edge (13) ,

an inner substrate (20) having an inner face (21) facing an inner space (I), an intermediate face (22) opposite the inner face, and a peripheral edge (23),

and a glazing frame structure (3) which holds the outer substrate and the inner substrate together such that the glazing separates said outer space from said interior space with a glazing cavity (4) between the outer substrate and the substrate inside,

said outer substrate and said inner substrate each comprising, in an upper part, a hole (14, 24) opening on each face of the substrate and separated from the peripheral edge of the substrate, the holes of the substrates being opposite the one of the other, to allow to realize the window (2) openable,

the glazing frame structure (3) further holding the two substrates around the holes (14, 24),

characterized in that at least one intermediate face (12, 22) of substrate which faces the glazing cavity (4) comprises in a part of the glazing situated under said window on the one hand a main glass sheet (15) and on the other hand a main plastic sheet (16) which is located in contact between the intermediate face (12, 22) and the main glass sheet (15), without the main glass sheet and the plastic sheet main contact with said glazing frame structure (3).

2. Glazing (1) according to claim 1, characterized in that said main glass sheet (15) and said main plastic sheet (16) are set back (t) by at least 2 mm, and preferably between 2 and 5 mm, with respect to said glazing frame structure (3).

3. Glazing (1) according to claim 1 or 2, characterized in that at least one intermediate face (12, 22) of substrate which faces the glazing cavity (4), and preferably the two intermediate faces (12). , 22) of substrate which face the glazing cavity (4) comprises (nt) in a portion of the glazing located above said window (2), on the one hand a secondary glass sheet (17, 17 ') and on the other hand a secondary plastic sheet (18, 18') which is located in contact between the intermediate face (12, 22) and the secondary glass sheet (17), with the secondary glass sheet ( 17, 17 ') and the secondary plastic sheet (18, 18') in contact with said glazing frame structure (3).

4. Glazing (1) according to claim 3, characterized in that said secondary plastic sheet (18, 18 ') and said secondary glass sheet (17, 17') are also located on each lateral side of said window.

5. Glazing (1) according to claim 3 or 4, characterized in that said main plastic sheet (16) and said secondary plastic sheet (18) are both located against the intermediate face (12) of the substrate outside (10).

6. Glazing (1) according to any one of claims 1 to 5, characterized in that each substrate (10, 20) is glass which has undergone a chemical or thermal treatment to strengthen it.

7. Glazing (1) according to any one of claims 1 to 6, characterized in that said window (2) comprises an outer glass element (40), an inner glass element (50) and a window frame structure ( 35) maintaining said outer glass element (40) with said inner glass element (50) by providing a window cavity (6) between the outer glass element (40) and the inner glass element (50), one face ( 42) of the outer glass element which faces the window cavity (6) comprising on the one hand a window glass sheet (45) and on the other hand a window plastic sheet (46) which is in contact between the outer glass element (40) and the window glass sheet (45), with the window glass sheet and the window plastic sheet in contact with said window frame structure (35) .

8. Glazing (1) according to any one of claims 1 to 7, characterized in that said glazing frame structure (3) comprises a cross member (38) horizontally located under said window (2), said cross member being not in contact with two lateral uprights (33, 33 ') of the glazing frame structure (3).

9. Glazing (1) according to any one of claims 1 to 8, characterized in that said glazing cavity (4) is located all around said window (2).

10. Glazing (1) according to any one of claims 1 to 9, characterized in that it comprises no outwardly projecting element, beyond the outer face (1 1) of the outer substrate (10). .